Adding-machine.



PATENTED JULY 19, 19Q4.

R. E. WESTON. ADDING MACHINE.

APPLICATION FILED FEB. 29. 1904.

N0 MODEL.

UNITED STATES Patented July 19, 1904.

PATENT OFFICE.

ADDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 765,531, dated. July 19, 1904.

Application filed February 29, 1904. Serial No. 195,882. (No model.)

To aZZ whom it may concern:

Be it known that I, RICHARD EBENEZER WESTON, gentleman, a subject of the King of Great Britain, residing at Grove Lodge, Clarendon Road, Watford, in the county of Hert ford, England, have invented a certain new and useful Adding-Machine, of which the following is a specification.

This invention relates to adding-machines especially suitable 'for markers for games, such as bridge. The total is shown by an indicator, which is preferably in the form of a hand revolving on a dial, but which may be a disk or cylinder or other arrangement, such as those used for revolution-counters. Generally two concentric hands are employed geared together in a similar manner to the hands of a clock, one hand recording units and the other hundreds.

According to this invention the units-indicator when driven forward is locked to a subsidiary indicator, preferably concentric with it, such indicator being provided with a spring which carries it back to zero when released without moving the units-indicator backward, so that each time the subsidiary indicator is turned from zero to some number on the dial that number is added to the total shown.

The drawings show a bridge-marker made according to this invention.

Figure 1 is aface view. Fig. 2 is asection by a plane parallel to the face; and Figs. 3 and 4 are sections on the lines 3 3 4 i, Fig. 2. Fig. 5 shows a detail.

a is the subsidiary hand, 6 the units-hand, and c the hundreds-hand.

The hand a is fixed to a spindle a, which also has fixed to it a toothed disk (0 and a heart-shaped cam (0 Fig. 5. The hand 6 is fixed to a sleeve Z) on the spindle a.

b is a toothed disk turning with the sleeve I), but free to move along it. This disk normally engages with the disk 0 the two disks thus forming a clutch.

b is a pinion fixed to the sleeve 5 and gearing with a wheel (Z, which is driven by a pinion 0 fixed to a spindle e, which can be turned by a handle in the form of the thumb-nut c. f is a lever pivoted at f and forked at its two ends to embrace the spindle e and en- 5 gage with a groove in the stem of the disk 6 f 2 is a spring which presses the lever f against the pinion 6 h is a lever carrying a roller h, which is pressed by the spring 7L against the heartshaped cam (0 6* is a disk fixed to the sleeve Z), and Z2 is a spring pressing it upward, thus acting as a brake to the gearing and preventing backlash.

When the nut e is turned, it drives the pinion b (through the pinion c and wheel (Z,) and the hands a and bare turned together through the same angle, while the lever h is turned against its spring [L2 by the heart- 5 shaped cam a". When the nut e is pressed downward against the spring the lever f lifts the disk 6 out of engagement with the disk (0 so freeing the latter, whereupon the pressure of the roller h upon the cam a turns 7 O the hand a back to zero, the hand 6 remaining stationary.

The hand 0 is fixed to a sleeve 0 on the sleeve Z) and to which a wheel 0 is fixed. This wheel gears with a pinion (Z, fixed to the wheel (Z.

j and Z" are pointers for scoring the games tricks, respectively.

What I claim is* 1. The combination of an indicator, a subsidiary indicator, a handle free to rotate and to move endwise, gearing connecting the handle to the first indicator and transmitting its rotary motion in either direction to it, a clutch locking the two indicators together and mech- 5 anism operated by the endwise movement of the handle for releasing the clutch.

2. The combination of an indicator, a sleeve fixed to it, a handle movable axially, a pinion fixed to the handle, a train of gearing con- 9 necting the pinion to the sleeve, a subsidiary indicator, a spindle carrying it and working in the sleeve, a clutch one member of which is mounted on the sleeve and the other on the spindle, a lever turned by the axial movement of the handle and operating the clutch and a spring tending to turn the subsidiary indicator backward.

3. The combination of an indicator, a sleeve ment of the handle and operating the clutch, fixed to it, a handle movable axially, a pinion a heart-shaped cam fixed to the spindle, a le- IO fixed to the handle, a train of gearing conver bearing against the cam, and a spring opnecting the pinion to the sleeve, a subsidiary erating the lever.

5 indicator, a spindle carrying it and Working RICHARD EBENEZER WESTON.

in the sleeve, a clutch one member of which Witnesses: is monnted on the sleeve and the other on the EDWARD CARPMAEL, spindle, a lever turned by the axial move- ROBERT B. RAUSFORD. 

